ABAP Select data from SAP table KMCWS_CREATE_DOCUMENT_IN_DOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KMCWS_CREATE_DOCUMENT_IN_DOC table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to KMCWS_CREATE_DOCUMENT_IN_DOC. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the KMCWS_CREATE_DOCUMENT_IN_DOC table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_KMCWS_CREATE_DOCUMENT_IN_DOC TYPE STANDARD TABLE OF KMCWS_CREATE_DOCUMENT_IN_DOC,
      WA_KMCWS_CREATE_DOCUMENT_IN_DOC TYPE KMCWS_CREATE_DOCUMENT_IN_DOC,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <KMCWS_CREATE_DOCUMENT_IN_DOC> TYPE KMCWS_CREATE_DOCUMENT_IN_DOC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KMCWS_CREATE_DOCUMENT_IN_DOC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KMCWS_CREATE_DOCUMENT_IN_DOC
  INTO TABLE IT_KMCWS_CREATE_DOCUMENT_IN_DOC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KMCWS_CREATE_DOCUMENT_IN_DOC
*  INTO TABLE @DATA(IT_KMCWS_CREATE_DOCUMENT_IN_DOC2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_KMCWS_CREATE_DOCUMENT_IN_DOC INDEX 1 INTO DATA(WA_KMCWS_CREATE_DOCUMENT_IN_DOC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KMCWS_CREATE_DOCUMENT_IN_DOC ASSIGNING <KMCWS_CREATE_DOCUMENT_IN_DOC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KMCWS_CREATE_DOCUMENT_IN_DOC>-CONTROLLER = 1.
<KMCWS_CREATE_DOCUMENT_IN_DOC>-PARENT_COLLECTION_RID = 1.
<KMCWS_CREATE_DOCUMENT_IN_DOC>-CHILD_NAME = 1.
<KMCWS_CREATE_DOCUMENT_IN_DOC>-ORDER_POSITION = 1.
<KMCWS_CREATE_DOCUMENT_IN_DOC>-CONTROLLER = 1.

ENDLOOP.

LOOP AT IT_KMCWS_CREATE_DOCUMENT_IN_DOC INTO WA_KMCWS_CREATE_DOCUMENT_IN_DOC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KMCWS_CREATE_DOCUMENT_IN_DOC-REFERENCE_RESOURCE_NAME, sy-vline,
  WA_KMCWS_CREATE_DOCUMENT_IN_DOC-TYPE, sy-vline,
  WA_KMCWS_CREATE_DOCUMENT_IN_DOC-OVERWRITE_ENFORCED, sy-vline,
  WA_KMCWS_CREATE_DOCUMENT_IN_DOC-LOCK_DESCRIPTOR, sy-vline,
  WA_KMCWS_CREATE_DOCUMENT_IN_DOC-CONTROLLER, sy-vline,
  WA_KMCWS_CREATE_DOCUMENT_IN_DOC-DEPTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KMCWS_CREATE_DOCUMENT_IN_DOC you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_KMCWS_CREATE_DOCUMENT_IN_DOC TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_KMCWS_CREATE_DOCUMENT_IN_DOC INTO WA_KMCWS_CREATE_DOCUMENT_IN_DOC.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_KMCWS_CREATE_DOCUMENT_IN_DOC_STR, 
CONTROLLER TYPE STRING,
PARENT_COLLECTION_RID TYPE STRING,
CHILD_NAME TYPE STRING,
ORDER_POSITION TYPE STRING,
CONTROLLER TYPE STRING,
REFERENCE_RESOURCE_NAME TYPE STRING,
TYPE TYPE STRING,
OVERWRITE_ENFORCED TYPE STRING,
LOCK_DESCRIPTOR TYPE STRING,
CONTROLLER TYPE STRING,
DEPTH TYPE STRING,
SCOPE TYPE STRING,
TIMEOUT TYPE STRING,
TYPE TYPE STRING,
PROPERTIES TYPE STRING,
CONTROLLER TYPE STRING,
PROPERTY TYPE STRING,
CONTENT TYPE STRING,
CONTROLLER TYPE STRING,
CONTENT TYPE STRING,
METADATA TYPE STRING,
CONTROLLER TYPE STRING,
E_TAG TYPE STRING,
ENCODING TYPE STRING,
EXPIRES TYPE STRING,
LANGUAGE TYPE STRING,
LAST_MODIFIED TYPE STRING,
LENGTH TYPE STRING,
TYPE TYPE STRING,
FETCH_GROUP TYPE STRING,
CONTROLLER TYPE STRING,
GENERATE_GUID TYPE STRING,
INCLUDE_CONTENT_METADATA TYPE STRING,
INCLUDE_PROPERTIES TYPE STRING,
INCLUDE_URLS TYPE STRING,
SELECT_PROPERTY_NAMES TYPE STRING,
CONTROLLER TYPE STRING,
STRING TYPE STRING,
SELECT_URL_TYPES TYPE STRING,
CONTROLLER TYPE STRING,
INT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-PARENT_COLLECTION_RID sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CHILD_NAME sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-ORDER_POSITION sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-REFERENCE_RESOURCE_NAME sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-TYPE sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-OVERWRITE_ENFORCED sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-LOCK_DESCRIPTOR sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-DEPTH sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-SCOPE sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-TIMEOUT sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-TYPE sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-PROPERTIES sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-PROPERTY sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTENT sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTENT sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-METADATA sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-E_TAG sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-ENCODING sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-EXPIRES sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-LANGUAGE sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-LAST_MODIFIED sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-LENGTH sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-TYPE sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-FETCH_GROUP sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-GENERATE_GUID sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-INCLUDE_CONTENT_METADATA sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-INCLUDE_PROPERTIES sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-INCLUDE_URLS sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-SELECT_PROPERTY_NAMES sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-STRING sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-SELECT_URL_TYPES sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-CONTROLLER sy-vline 
WA_KMCWS_CREATE_DOCUMENT_IN_DOC_STR-INT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.